The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 1990
Filed:
Nov. 30, 1987
Heinrich Peter, Binningen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
N,O-acylates, derived from N-acylated carbamic acids, of desferrioxamine B of the formula ##STR1## in which B represents a carbamoyl radical of the partial formula --CO--NH--Alk--CO--O--R.sub.a.sup.1 (II) in which R.sub.a.sup.1 represents C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.4 -alkyenyl and Alk represents C.sub.1 -C.sub.7 -alkylene that is optionally substituted by hydroxy, C.sub.1 -C.sub.4 -alkanoyloxy, amino, C.sub.1 -C.sub.4 -alkoxycarbonyl, carbamoyl, phenyl, hydroxyphenyl, methoxyphenyl or by indolyl, and each of the symbols A.sup.1, A.sup.2 and A.sup.3, independently of the others, represents hydrogen, an acyl radical Ac derived from a carboxylic acid, or an above-defined carbamoyl radical of the partial formula II, form strong iron(III) and aluminium complexes in living cells. They can therefore be used therapeutically for the treatment of pathological conditions in warm-blooded animals, including humans, that are associated with an excess of iron(III) or aluminium in the body or are caused by iron(III)-dependent pathogenic organisms. The compounds according to the invention can be obtained, for example, by conventional reaction of desferrioxamine B, or a suitable N- and O-silylated derivative thereof, with an isocyanatoalkanoic acid ester.